Under normal circumstances, advanced Supreme Gods would feel a pull from the realm of supreme powerhouses when they had either comprehended a law to the paramount stage or a Dao of Heaven and Earth to the seventh stage. Many would comprehend the laws and the Four Daos of Heaven and Earth as much as they could before entering the realm of supreme powerhouses. This was because it would be difficult to make improvements after entering the realm of supreme powerhouses.
Most powerful supreme powerhouses had profound comprehensions of the laws and the Four Daos of Heaven and Earth before they broke into the realm of supreme powerhouses.
As for Feng Qing Yang, since he had comprehended the law and the Sword Dao to the paramount stage and the seventh stage respectively as an intermediate Supreme God, he quickly became an advanced Supreme God and could directly break into the realm of supreme powerhouses after that.